Pitman connection.



Patentad Aug. 7, I900.

E. JONES.

PITMAN CONNECTION.

(Application filed liar. 20, 1900.)

(No Model.)

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UNITED STATES PATENT Orrrcn.

ELIE JONES, OF REAGAN, TENNESSEE. 7

PITMAN CONNECTION.

SPECIFICATION forming part of Letters Patent No. 655,442, dated August 7, 1-900.

Application filed March 20, 1900. Serial No. 9,436. (No model.)

To all whom it may concern:

Be it known that I, ELIE J ONES, a citizen of the United States, residing at Reagan, in

the county of Henderson and State of Tennes-.

see, have invented a new and useful Pitman Connection, of which the following is a specification.

The invention relates to improvements in pitman connections.

The object of the present invention is to improve the construction of pitman connections and to provide a simple and comparatively inexpensive one designed for use on mowers, reapers, binders, and various other machines and devices and adapted to enable the wear of the parts to be readily taken up to prevent lost motion and capable of enabling the hook of a pitman to be readily detached from a cutter-bar without removing both the nuts, whereby the blades of the cutter-bar may be conveniently sharpened.

The invention consists in the construction and novel combination and arrangement of parts, hereinafter fully described, illustrated in the accompanying drawings, and pointed out in the claims hereto appended.

In the drawings, Figure 1 is a perspective view of a pitman connection constructed in accordance with this invention. Fig. 2 is a longitudinal sectional view of the bearing or knife-head at the outer end of the pitman. Fig. 3 is a similar view of the bearing of the inner end of the pitman. Fig. 4 is a transverse sectional view on line 4 4 of Fig. 2. Fig. 5 is a similar View on line 5 5 of Fig. 2. Figs. 6 and 7 are detail views of the sections of the outer bearing or knife-head.

Like numerals of reference designate corresponding parts in all the figures of the drawings.

1 designates a pitman provided at its outer end with a hook 2, which may be fixed to the pitman in any suitable manner and which is arranged in an outer bearing or knife-head 3, and the inner end of the pitman is provided with a bearing 4., which receives the crank or wrist pin 5 of a crank-wheel 6. v The outer bearing or knife-head is composed of a lower or fixed section 7 and an upper adjustable section 8, the lower or fixed section being provided with an arm or extension 9, which is secured by suitable fastening devices 10 to the cutter-bar upon which the knife-head orbearing is mounted. The fixed section 7 is pro vided at the back of the eye or opening of the bearing with a vertical extension or portion 11, forming the rear wall, but terminating short of the top of the eye of the bearing. The adjustable section 8, which extends over the top of the fixed section, forms the top wall of the eye or hearing and the front wall of the same; but it terminates short of the bottom of the eye and fits upon an extension or arm 12, arranged at the end of the cutterbar. By terminating the fixed section short of the top of the eye and the adjustable sec tion short of the bottom of the eye the latter is adapted to be adjusted inward to take up the wear and prevent lost motion.

The adjustable section is provided with a fiat top face, and it has an inclined front face 13, and it is connected with the fixed section bymeans of front and rear bolts 14 and 15. The rear bolt is arranged in a vertical position or'perpendicular to the length of the fixed section, and it extends through a longitudinal slot 16 of the adjustable section.

The head of the rear bolt is arranged at its lower end, and the nut 17 is at the upper end and engages the top of the adjustable section.

The front bolt 14, which has its head 18 at its lower end, is inclined and is provided at its upper end with a nut 19. The front portion of the adjustable section is provided with a longitudinal slot 20 and by screwing the nut 19 against the front inclined face it will be apparent that the adjustable section will be forced inward, whereby wear may be readily taken up. The slot 20 is arranged at an inclination and the head 18 of the bolt is slightly elliptical; but it may be of any other non-circular shape to prevent it from rotating when the nut is screwed against the adjustable section. The heads of both of the fastening devices are let into the lower face of the fixed section and their outer faces are flush with the lower face of the bearing.

The hook of the pitman is provided with a reduced extension having a groove 21 and forming an outer head, which is engaged by a pivoted latch 22, whereby the hook is detachably retained in the eye of the bearing 01' knife-head. The latch, which is arranged at the outer or front face of the hearing or knifehead, is fixed at one end to a pivot or pintle 23, and it is provided with a slot 24, extending upward from its lower edge and adapted to receive the reduced portion or neck which connects the head 22 to the body portion of the hook. The other end of the latch is provided with an arm 24?, forming a handle by.

means of which the latch may be readily lifted out of engagement with the hook of the pitman when it is desired to disconnect the latter from the cutter-bar. In order to retain the latch in engagement with the hook of the pitman, a coiled spring 25 is disposed on the pivot or pintle 23, one end of the spring being connected with the body of the pivot or pintle and its other end being connected with the bearing, as clearly illustrated in Fig. 5 of the accompanying drawings.

1 The bearing 4 at the inner end of the pitman, which is constructed substantially like the hearing or knife head heretofore described, is composed of a lower fixed section 26, an upper adjustable section 27, and front and rear fastening devices 28 and 29. lower section terminates short of the top of the eye or opening of the bearing and the upper section terminates short of the bottom of the same, whereby the wear may be effectively taken up. The Wrist-pin or crank-pin of the crank-wheel is provided with a head of greater diameter than the opening of the bearing to retain the latter on it.

It will be seen that the pitman connection, which is simple and comparatively inexpensive in construction, is adapted for all kinds of machinery and that the bearings may be readily adjusted to take up the wear of the parts. It will also be apparent that when the pitman connection is applied to the cutting apparatus of a mower, reaper, or analogous machine it will permit the cutter-bar to be readily detached, so that it may be conveniently removed for sharpening or replacing broken knives. It will also be apparent that the adjustment is effected by means of the inclined or angularly-disposed front fastening device and the inclined face of the adjustable section of the bearing.

Oil-holes or oil-cups for enabling the bearings to be lubricated may be arranged at any desired point on them; also, instead of employing a latch for retaining the hook of the pitman in the bearing or knife-head-a spherical hook may be provided, and the upper section may be provided at its top with an upwardly-projecting lug or protuberance to form a bearing-surface when the knife-head or hearing is arranged within a guide. The

above and similar changes fully come within the scope of the invention, and I desire it to be understood that various changes in the form, proportion, size, and the minor details of construction within the scope of the ap- The pended claims may be resorted to without de parting from the spirit or sacrificing any of the advantages of this invention.

What I claim is 1. In a device of the class described, the combination with a pitman, of a bearing composed of a lower fixed section provided at the back of the opening with an extension forming the rear wall of such bearing-openin g and terminating short of the top of the latter, said fixed section being also provided at its bottom with a front extension, an upper adjustable section extending over the top of the lower section and forming the top and front wall of the bearing-opening and terminating short of the bottom of the same, said adj ustable section being provided at its front with an inclined or angularly-disposed face, a rear or inner fastening device arranged perpendicular to the length of the bearing, and an inclined or angnlarly-disposed front fasten ing device passing through the sections and engaging the front inclined or angularly-dis posed face of the upper section, substantially as and for the purpose described.

2. In a device of the class described, the combination with a pitman having a hook, of a bearing having an eye to receive the hook and composed of upper and lower sections terminating respectively short of the top and the bottom of the eye, and extending in ad- Vance and in rear of the same, the rear fastening device arranged perpendicular to the length of the bearing, and the front fastening device arranged at an inclination and adapted to force the adjustable section inward, substantially as described.

3. In a device of the class described, the combination with a pitman having a hook, of a hearing or knife-head composed of a lower section having an arm 9,.and an upper section provided with front'and rear slots, the front slot being inclined, and the front and rear fastening devices connecting the sections and passing through the said slots, substantially as described.

4. In a device of the class described, the combination with a pitman having a hook, of a bearing having an eye to receive the hook, a latch arranged to engage the hook and provided with a pivot or pintle extending through the bearing, and a coiled spring disposed on the pivot or pintle and connected with the same and with the bearing,substantially as described.

In testimony that I claim the foregoing as my own I have hereto aflixed mysignature'in the presence of two witnesses.

ELIE JONES.

WVitnesses:

E. P. MARTIN, W. H. STANFIELD.

IIO 

